my question is why does my INR spike for no reason, I eat no green veg, and only have liver every 3 months or so, Wed is was 7 so I stopped the coumadin for 2 days and Dr gave me Vit K, Friday is was down to 1.3, it has been as high as 11, I take 5mg a day except on Wed, anyone else have this problem? also anyone have Vit K at home to take in an emergency? (I have a 50 mile round trip to the Dr) t